diff --git a/src/etnaviv/isa/etnaviv.xml b/src/etnaviv/isa/etnaviv.xml
index 85277350891..ac4668dacd5 100644
--- a/src/etnaviv/isa/etnaviv.xml
+++ b/src/etnaviv/isa/etnaviv.xml
@@ -730,6 +730,10 @@ SPDX-License-Identifier: MIT
 	<pattern low="96" high="98">000</pattern>
 </bitset>
 
+<expr name="#instruction-has-src0">
+     ({SRC0_USE} != 0) &amp;&amp; ({SRC1_USE} == 0)
+</expr>
+
 <bitset name="#instruction-cf-maybe-src0-src1" extends="#instruction-cf">
        <display>
                {INSTR_CF} {:align=18}void, void, void, {TARGET}
@@ -741,6 +745,12 @@ SPDX-License-Identifier: MIT
 		</display>
 	</override>
 
+	<override expr="#instruction-has-src0">
+		<display>
+			{INSTR_CF} {:align=18}void, {SRC0}, void, {TARGET}
+		</display>
+	</override>
+
        <!-- SRC0 -->
        <field name="SRC0_USE" pos="43" type="bool"/>
        <field name="SRC0_REG" low="44" high="52" type="uint"/>